Manifold carbon copy device



Jan- 1, 935- R; .1. COPELAND MANIFOLD CARBON COPY DEVICE Filed May 4, 1934 30 tion.

Patented Jan. 1; 1935 1,986,136-

UNITED STATES PATENT OFFICE.

,Bobert I. Copeland, Toronto; Ontario, Canada Application May 4, 1934, Serial No. 723,811

In,Canada April 4, 1934 Y 6 Claims. (01. 282-28) The principal objects of this invention are strip 3 of thin tough paper, the ends 4 of which to provide a multiple'arrangement of"manifo1dare secured to the marginal edges 5 of the main ing carbon sheets particularly adapted \for use sheet 1, the central portions of these cross strips with continuous record sheets which will permit being unsecured for a width slightly greater than 5 the easy movement of the carbon sheets lengththat-of the record strips 6 or sheets which are of 5 wise of the record sheets when they are being slightly greater width than the carbon sheets. shifted and which will not be liable to catch The record sheets can thus be threaded beon the transverse perforations of the record tween the manila backing sheet 1 and the first sheets and be torn thereby. of the carbon sheets and the other sheets '7 and A further and important object is to provide 8 are threaded between'the adjacent carbon a manifolding device which will greatly facilisheets. tate the insertion and threading of the record In preparing the carbon sheets for attachment sheets therethrough, and still further, to effect to the backing sheet the carbon sheetsmay be economy in the cost. formed as'shown in Figure 2 with a selvedge The principal feature of the invention consis edge 9 free of the carbon preparation. 15 in securing one end of each of the carbon sheets The cross strip 3 which is gummed on one side to a thin reinforcing strip and fastening the and is of greater length than the width of the ends of the reinforcing strips to a backing sheet carbon sheet, is secured to the back of the carbon of strong durable material, the reinforcing memsheet along the selvedge edge and it is then folded hers-being preferably folded and presenting a longitudinally and secured to the other side. 20

rounded edge to slip over the surface of the con- The folding of this strip over the edge of the tinuous record sheets. carbon sheet protects the carbon from catching A further and important feature consists in upon the projecting portions of perforations in the novel manner of further reinforcing the the record sheets as it threadsthrough between folded strips with a thread or cord sealed in the the carbons and it also presents a rounded edge 25 folded edge. which will slip over any projections.

In the accompanying drawing, Figure 1 isa It may be found desirable to further reinforce perspective view of a manifold carbon copy dethis folded edge strip and also to enhance the vice constructed in accordance with this invenrounded feature, and this is accomplished in a very simple manner by laying a thread or card Figure 2 i n la d perspective detail illus- 10 along the folded edge above the edge of the I trating the manner of arranging the reinforcing carbon sheet and sealing it in place therein as is strips upon the end of a carbon sheet to be used shown in Figures 3 and 4*. in this device. This cord not only provides a desirable round- 3 is a Perspective detail showing a mOdied end edge' for the carbon sheet and a. reiniied arrangement of means for securing and reforcement'therefonbut it will be seen on referinforcing the carbon sheets. ence to Figures 1, 3 and 4 thatzit extendsbeyond I 4 Is an enlarged d exaggerated W- and clear of the carbon sheet so that it will funcspective detail of a portion of the latter form of tion to afford a secure anchorage to the medium 40 reinforcement as illu r d in Fi ure 3- to which the carbon sheets are attached.

i 5 is a dia a a ic s ti al v w s w- In Figures 3 and 4 I also show a modification ing the manner in which the'device is used in f the manner of securing the reinforcing edge Y continuous record .form sheets. strip to carbon sheets. This is particularly Fi 6 i a Vi w Simi r t Fi 5 i tin adapted where carbon sheets with selvedge edges the use of the carbon sheet backing as a means are not available and as herein shown the car- 45 guldlllg separate P p sheets into the typebon sheet is punched with a row of perforations Wflteli 11 along the edge which is laid over the rein- In the practical appllcfi-tlon 0f 'l inv n i forcing cross strip. The folded over portion 'of as e 1 Of a Strong tough I -W such as 1113- the cross strip when pressed into place will adnila, is cut approximately an inch wider than here to the other half through the perforations 50 the continuous record sheets with which the which are proportionately large and allow the d p tln devlce is o be used-v two adhesive surfaces of the reinforcing strip Several sheets of carbon paper 2 are arranged to meet therethrough, thus firmly securing the centrally of the width of the manila sheet and carbon sheet to the strip.

each of said carbon sheets is fastened to a cro s The reinforcing edge strips of the carbon 55 edge 12 of the backing sheet 1 presents a lip,

. tate the easy threading .of the record sheet thereto use separate or individual letter or form sheets with continuous duplicates and the bottom forming with the adjacent carbon sheet a pocket into which the edge of the letter sheet 13 may be inserted to guide it into position in the typewriter carriage. As shown in Figure-1 in dotted lines, the lip preferably presents an edge which is curved or convexed to facilitate the insertion of the "lette or form in-the pocket formed between the carbon sheet and lip. y A special form of carbon gate may be used as illustrated in Figure 6 in which the first carbon sheet 14 is fastened over its entire width to the backing sheet 1 spaced from the bottom edge 12 of the sheet 1 to form a pocket, the line of engagement of the carbon sheet with the backing sheet 1 forming a definite stop for the inserted letter sheet.

It will be readily seen that when a letter sheet is inserted from the front side of the platen of the typewriter into the pocket provided by the carbon gate the said sheet will beguided back nto the carriage around the platen with the least possible trouble to the operator. a

It will readily be appreciated that a duplicating device such as described may be partly assembled, that is-to say, one end of each of the reinforcing end strips of the carbons maybe fastened to the margin of the manila backing,

ing sheet of greater width than the carbon sheets, the portion thereof extending beyond the sides of the carbon sheets being secured to the ends of the reinforcing strips extending beyond 1 the carbon.

2. A manifold carbon copy device comprising carbon sheets, folded strips of material embracing and secured one to one end of each of said carbon sheets and extendingrbeyond the side edges thereof and forming a rounded protected edge for the carbon sheets, and a backing sheet of greater width than the carbon sheets having the extension end portions only of the reinforc' ing strips of said carbon sheets attached to the side marginal portions thereof with the rounded edges spaced from each other.

3. In a manifoldcarbon copy device, carbon sheets having a selvedge edge, folded strips of fibrous material embracing and cemented to said selvedge edge and projecting beyond the sides of the carbon sheets, said strips being laid one over the other in stepped arrangement, and

a reinforcing cord arranged in the fold of said strips, and a backing sheet having the ends of said folded reinforced strip extending beyond the carbon sheets secured to the marginal edges thereof,'leaving the central portion free;

5. A manifold carbon copy device comprising a carbon sheet and a backing attached to one end of the carbon sheet and extending partly thereunder presenting a free guiding lip, said lip terminating in a convexed edge to facilitate the insertion of an individual letter sheet or form between the lip and carbon sheet.-

6. In a carbon copy device, a carbon sheet having one edgereinforced by a cord extending longitudinally thereof, the cord and sheet being secured together and said cord being extended clear of the carbon sheet to form a secure anchorage for the sheet.

- ROBERT J. COPELAND. 

